Operation - Renesas H8S/2368 Series Hardware Manual

17.4

Operation

The D/A converter includes D/A conversion circuits for two channels, each of which can operate
independently.
When DAOE bit in DACR23 is set to 1, D/A conversion is enabled and the conversion result is
output.
The operation example concerns D/A conversion on channel 2. Figure 17.2 shows the timing of
this operation.
[1] Write the conversion data to DADR2.
[2] Set the DAOE0 bit in DACR23 to 1. D/A conversion is started. The conversion result is output
from the analog output pin DA2 after the conversion time t
result is continued to output until DADR0 is written to again or the DAOE0 bit is cleared to 0.
The output value is expressed by the following formula:
DADRcontents
256
[3] If DADR2 is written to again, the conversion is immediately started. The conversion result is
output after the conversion time t
[4] If the DAOE0 bit is cleared to 0, analog output is disabled.
Vref
has elapsed.
DCONV
has elapsed. The conversion
DCONV
Rev. 2.00, 05/03, page 641 of 820